Castle Storage - Diagonal St
2171 Diagonal St, Waterloo, po box 2726
Waterloo, IA 50703
(319) 232-1200

Office Hours

Monday - Friday9:00 AM - 5:00 PM
Saturday10:00 AM - 12:00 PM

Access Hours

Sunday - SaturdayOpen 24 Hours

24/7 access

Self Storage in Waterloo, IA

We have 4 facilities total with the main office located at 2551 Logan Ave. 2171 Diagonal Street has a large variety of units avail ranging from 5x10 to 10x30 (single or double door). This site also has the indoor RV units which are 15X50, with timed led lighting and timed outlets to use at no additional cost to the customer. They come with their own 12X14' overhead door with a customer specific door code. This facility is gated needing an access code to enter and exit the facility along with security cameras and lighting.

Your Waterloo vehicle parking and self storage solutions are just a quick drive away! Castle Storage Diagonal is only 6 miles from downtown Waterloo via US-218 N. You can find us near the airport or just off Wagner Rd/Airline Hwy. Find the perfect second home for your RV, boat, or other vehicle today.


From the Office (2551 Logan Ave)
Exit the parking lot and turn Left towards Airline Hwy
Turn Left onto Airline Hwy
Turn Left onto Wagner Road
You will cross a set of train tracks take an immediate Right onto Diagonal St

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